Divorcing A Foreign National

[hobbypassion21]

I am an American who has married a beautiful Colombian woman by proxy. We have a son together. He is 3. It's been 3 years now and we both agree that this marriage isn't working out. We want separation, the fastest & easiest way possible. We can come to terms on our own. That is not a problem. We just want a divorce. Now the thing is, I'm living in germany and my wife & son are in Colombia. She is not a US Citizen, nor does she have a Green Card. She's a foreign national. She doesn't have a job. I pay for everything. I support them while they are over in Colombia. This is the reason why I want a divorce. I want to protect my money. I have no problem supporting my child. I will gladly do that. But I'm pretty sure that the cost of living in a particular country has a lot to do with how much I give for child support. Am I right? And not forget to mention, this marriage was by proxy. The marriage certificate is from the state of Montana. WE DON'T LIVE IN MONTANA. So how would be the best way to go about this?